Method of erecting vessels with longitudinal framing



W. GATEWOOD.

METHOD 0F ERECTING VESSELS WITH'LONGITUDINAL FRAMING.

APPLICATION FILED JUNE 17, 19l9.

Patented Nov. 2, 1920.

NA RRG W CENTRE LINE A TTHNEYS.

W. GATEWOOD.

METHOD 0F ERECTING VESSELS WITH LONGITUDTNAL FRAMING.

APPLICATioN FILED JUNE 17, 1919.

W. GATEWOOD.

METHOD 0F ERECTING VESSELS WITH LONGITUDINAL FRAMING.

APPLICATION FILED IUNE I7, 1919.

Patented N ov. 2, 1920.

4 SHEETS*SHEET 3.

W. GATEWOOD.

METHOD 0F ERECTING VESSELS WITH LONGITUDINAL FRAMING.

APPLICAHON FILED JUNE 17, |919.

1,357,699, muted NOV. 2,1920.

4 SHEETS-SHEET 4.

UNITED STATES PATENT oFFlcE.:

WILLIAM GATEWOOD, OF NEWPORT NEWS, VIRGINIA, ASSIGNOR TO NEWPORT NEWSSHIPBUILDING & DRY DOCK COMPANY, OF NEWPORT NEWS, VIRGINIA,A CORPO-RATION 0F VIRGINIA.

METHOD OF ERECTING VESSELS IVITH LONGITUDINAL FRAMING.

Specification of Letters Iatent.

Patentedivov. 2, 1920.

.application iled .Tune 17, 1919. Serial No. 304,820.

To all whom t may concern:

Be it known that I, WILLIAM GA'rnwooD, a citizen of the United States,residing at Newport News, in the county of lVarwick, State of Virginia,have in. ented a new and useful Method of Erecting Vessels withLongitudinal Framing, of which the following is a specication.

In a contemporaneously pending application filed by me on May 7th, 1917,Serial No. 166,991, I have shown, described and broadly claimed a novelconstruction of hull for oating vessels of all types wherein I combinelightness of construction with great strength and resistance to alltendencies to bendings or bucklings to which vessels or any partsthereof are ordinarily subjected.

It is well-known that vessels have been built with longitudinal framesspaced suffi- I cases where this construction has been used,

the `longitudinal frames are continuous through the transverse frames,which are tted over or around the longitudinal frames, but are cut forconvenience at the bulkheads and the ends bracketed.

One type of this construction is illustrated in Figure 1.

The reduction in bending moment caused by the use of brackets, may beutilized to reduce Ithe number of transverses without making thelongitudinals unduly large by bracketing the longitudinals to thetransverses as well as to the bulkheads. This construction isillustrated in Fig. 2.

To the above ends, my invention consists of a novel method of erectingthe framing of vessels built with longitudinal frames, wherein I firstbring one of the transverse bulkheads or transverses into properposition and suitably shore it and then regulate the other transversebulkheads and transverses in fore and aft position by means of certainof-the longitudinal frames, making In most tion and all temporarilysecureduntil the adjoining strakes of Vshell plating are iii place. Thelongitudinals are then secured to the shell plating in general beforethe rivets securing the longitudinals to the transverses and bulkheadsare driven, or before thelongitudinals are otherwise permanently securedif welding is used instead of riveting.

By my novel method of erection, I am enabled to avoid the extreme carein setting the longitudinal frames, which is necessary when theloiig'itudinals are secured to the transverse members before beingsecured to the shell plating, and, moreover,`the placing of the shellplating can proceed without waiting for the longitudinal frames to besecured.

For the purpose of illustrating my invention, I have shown in theaccompanying drawings, Certain forms wherein the novel steps of mymethod can be carried out, since the same will be found in practice togive satisfactory and reliable results, although `it is to be understoodthat the various instrumentalities or steps of which my inventionconsists can be carried out in different ways and that my invention isnot limited to the precise steps or sequence of steps as herein shownand described.

Fig. l represents a section taken through a compartment of a vessel,showing two partment on la vessel, showing two trans-l verses betweentransverse bulkheads.

Fig. 6 represents a partial section taken through the junction of alongitudinal and a bulkhead, the left side showing the framingtemporarily secured and the shell plating not yet drawn into place,while the right side shows the shell plating riveted to the longitudinaland bulkhead, and the holes in the connection of the longitudinalto thebulkhead ready for reaming, if necessary, before riveting.

Similar numerals of reference indicate corresponding parts.

Referring to the drawings Referring first to Fig. 1,-1 designates thetransverse frames or transverses, and 2 the web on the center linebulkhead. 3 designates the web on the transverse bulkhead, and 4designates the longitudinal supported by the transverse and bracketed tothe transverse bulkhead.

5 designates stiffeners on the centerline bulkhead supported by the Websand bracketed tothe transverse bulkheads.

6 designates stifi'eners on the transverse bulkheads supported by thewebs and bracketed at one end tothe shell and at the other end to thecenterline bulkhead.

7 designates the brackets located at the end of the longitudinal orstiffener, it being noticed that the spacing between transverses or websis appreciably less than the spacing between a transverse and bulkheador between a web and bulkhead or shell. 17 designates the shell plating.

In the construction shownin Fig. 3, which is a partial elevation of avessel having longitudinal framing and two transverses betweentransverse bulkheads, I have` designated the transverses as 1, while 14designates the bulkheads and 16 the decks.

In the construction vseen in Fig. 4, which is a partial elevation of avessel having longitudinal framing and a single transverse betweentransverse bulkheads, 1 indicates transverses, 14 the bulkheads and 16the decks. v j

I am aware of the Isherwood Patent No. 1,147,732, wherein is claimed thesecuring or rigidly mounting of the longitudinal frames in exactposition before securing the shell plating, but my invention isdifferentiated therefrom, since in my method I preferablyv do not securethe longitudinal frames in exact position until after the shell inplace.

In my method of erecting the framing of vessels built with longitudinalframes I first bring one of the transverse bulkheads or transverses intoproper position and suitably shore it. I then bring the remainingtransverse and longitudinal frames into position and temporarily secureall, until the adjoining strakes of shell plating are in place, when thetransverse members and longitudinals are, secured to the shell platingin general before the rivets securing the lonplating is .gitudinals tothe transverses or bulkheads are driven, it being understood by thoseskilled in the art that the alining rivet holes in the connection of thelongitudinal to the transverse memberfshould be reamed if necessary tosecure fair holes; or before the longitudinals are otherwise permanentlysecured if welding is used instead of riveting. The Iadvantages of myinvention will be understood from Fig. 6, wherein 18 designates aservice bolt for temporarily securing the framing, 19 designates a rivethole in clip 20 on bulkhead 14, 21 designates a corresponding rivet holein bracket 7, and 22 represents the distance which` the parts of theframing may be out of alinement before they are permanently secured toeach other, and which will be eliminatedwhen the shell f plating isdrawn up to the framing.

It will be apparent to those skilled in the art, that by my method oferecting, the ex treme care in setting the longitudinal frames isavoided, which is necessary when the longitudinals are secured to thetransverse members before being secured to the shell plating, and,moreover, the placing of the shell plating can proceed without waitinfor the longitudinal frames to be secure The same order of procedure canbe followed in the construction of the decks, and where the bottomplating is put in place before the frame is assembled on it, thecustomary procedure would be followed in connection therewith.

Having thus described my invention, what' I claim as new and desire tosecure by Letters Patent, is

1. The method of erecting vessels with longitudinal framing, whichconsists in first bringing one of the transverse members in proper foreand aft position, next regulating the adjacent transverse members infore and aft position, by means of certain of the longitudinal frames,next temporarily securing the longitudinal frames to the transversemembers until the adjacent shell plating is in place, and lastlysecuring said shell plating to the transverse members and longitudinalframes before permanently securing said longitudinal frames to saidtransverse members.

2. The method of erecting vessels with longitudinal framing, whichconsists in first bringing one of the transverse members in properkforeand aft position, next regulating the adjacent. transverse members infore and aft position, by'means of certain of the longitudinal frames,next temporarily securing the longitudinal frames to the transversemembers until the adjacent shell plating is in place, next securin theshell plating to the transverse mem ers and longitudinal frames beforethe` rivets securing. said frames to said members are driven,

Teaming the alning rivet holes after securing is in place, and lastlysecuring said shell plating to the transverse members and longitudinalframes before permanently securing said ylongitudinal frames to saidtransverse members. f

4. The method of erecting 'vessels With longitudinal framing, whichconsists in first bringing one of the transverse members in proper foreand aft position, next bringing the remaining transverse andlongitudinal frames into position, next temporarily securing thelongitudinal frames to the trans? versemembers until the adjacent shellplating is in place, next securing the shell plat'-,

ing to the transverse members and longitudinal frames before the rivetssecuring said frames to said members are driven, reaming the aliningrivet holes after securing the proper faying of the longitudinal framesagainst the shell plating, 'and lastly riveting said longitudinal framesto said transverse members. i

i WILLIAM GATEWOD.

Witnesses: v

S. L. Woon, A... V; GODWIN.

